Item Specifications UPC 842176135755 Package Quantity 10 Size 7/16"-20 x 1-1/4" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.844" Head Height 0.234" Drive Style Allen Hex Key Drive Size 1/4" Inch / Metric Inch Thread Size 7/16"-20 Thread Dia. 0.4375" Thread Class Class 3A Coarse / Fine Fine Threads Per Inch (TPI) 20 Thread Coverage Full Thread Length 1-1/4" Thread Length Dec. 1.016" Material Alloy Steel Grade Grade 8 Finish Black Oxide Specification 1 ASME : B18.3 Tensile Strength 120,000 PSI Core Hardness Rockwell C32 Item Type Socket Screws Product Code 5150-10870 SKU 721228